11-16
Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
78-13315-02
Chapter 11 Configuring VLANs
Configuring Private VLANs
•
After you configure a private VLAN, you cannot change the VTP mode to client or server mode,
because VTP does not support private VLAN types and mapping propagation.
•
You can configure VLANs as primary, isolated, or community only if no access ports are currently
assigned to the VLAN. Enter the
show port
command to verify that the VLAN has no access ports
assigned to it.
•
A primary VLAN can have one isolated VLAN and/or multiple communities associated with it.
•
An isolated or community VLAN can have only one primary VLAN associated with it.
•
Private VLANs can use VLANs 2 through 1000 and 1025 through 4096.
•
If you delete either the primary or secondary VLAN, the ports associated with the VLAN become
inactive.
•
When configuring private VLANs, note the hardware and software interactions:
–
You cannot use the inband port, sc0, in a private VLAN.
Note
With software release 6.3(1) and later releases, the sc0 port can be configured as a private
VLAN port, however it cannot be configured as a promiscuous port.
–
You cannot set private VLAN ports to trunking mode, channeling, or have dynamic VLAN
memberships, with the exception of MSFC ports that always have trunking activated.
–
You cannot set ports belonging to the same ASIC where one port is set to trunking or promiscuous
mode or is a SPAN destination and another port is set to isolated or community port for the modules
listed in
Table 11-3
. (Note that a promiscuous port can be defined in the same ASIC as a trunk port
but not within the same ASIC as an isolated or community port.)
If you attempt such a configuration, a warning message displays and the command is rejected.
Table 11-3
Modules with Ports Listed by ASIC Groups
Module Number
Description
Ports by ASIC
WS-X6224-100FX-MT
24-port 100FX Multimode MT-RJ
Ports 1–12
Ports 13–24
Ports 25–36
Ports 37–48
WS-X6248-RJ-45
48-port 10/100TX RJ-45
Ports 1–12
Ports 13–24
Ports 25–36
Ports 37–48
WS-X6248-TEL
48-Port 10/100TX RJ-21
Ports 1–12
Ports 13–24
Ports 25–36
Ports 37–48
